Influence of Local Variables and Landscape Metrics on Gerromorpha (Insecta: Heteroptera) Assemblages in Savanna Streams, Brazil

Dias-Silva, Karina; Brasil, Leandro Schlemmer; Juen, Leandro; Cabette, Helena Soares Ramos; Costa, Cleinaldo de Almeida; Freitas, Pâmela Virgolino; Marco, Paulo De

doi:10.1007/s13744-019-00748-8

Cited by 21 publications

(17 citation statements)

References 72 publications

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“…The Habitat Integrity Index (HII) indirectly measures variations in habitat structure related to the stream's degree of conservation [18][19][20]. The relationship between the HII and Gerromorpha communities is well known in communities from the Cerrado [15,24,25], the Amazon Forest [16,21], and other biomes such as the Atlantic Forest, as shown by Brasil et al [18]. The Gerromorpha species richness increased with the increase of environmental integrity, indicating that the changes caused by land use nearby the stream channel are essential for the maintenance of these communities, which rely on suitable habitats for oviposition and foraging [44,60].…”

Section: Discussionmentioning

confidence: 99%

“…They are considered sensitive to both natural and anthropic environmental change [24]. Changes in the habitat structure can alter the physicochemical variables of the water, which in turn have negative effects on the taxonomic diversity of Gerromorpha [16,20,25] or even change the morphology of individuals such as wing dimorphism [26].…”

Section: Introductionmentioning

confidence: 99%

“…Previous studies claimed that the Heteroptera were resistant to environmental change [27]. However, more recent studies have shown negative effects of environmental change on Heteroptera communities [15,16,21,[24][25][26]28]. Ephemeroptera, Plecoptera, Trichoptera, and Odonata were considered to be more sensitive to losses of habitat integrity in tropical streams than Heteroptera [18].…”

Section: Introductionmentioning

confidence: 99%

“…However, a recent literature synthesis showed that the Heteroptera are as efficient as bioindicators as these others. Considering these organisms, recent studies have shown that anthropic changes can alter species interactions [22] and diversity metrics such as species richness and composition [16,24,25].…”

Section: Introductionmentioning

confidence: 99%

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Effects of Environmental Changes on Gerromorpha (Heteroptera: Hemiptera) Communities from Amazonian Streams

et al. 2022

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The presence of environmental conditions that are suitable for the development of agricultural and cattle-raising activities has favored the expansion of land use in the Brazilian Amazon. This expansion changes the environmental conditions of aquatic ecosystems by altering the structure of the streambeds and the physicochemical conditions of the water. Therefore, this manuscript aimed to assess the effect of changes in environmental conditions along a gradient of different land uses on the richness and species composition of Gerromorpha (Heteroptera: Hemiptera) communities in streams from the Brazilian Amazon. We sampled Gerromorpha communities and environmental variables (physical structure of the habitat and physicochemical characteristics of the water) in 45 streams in the municipality of Paragominas in the state of Pará, Brazil. We then performed variation partitioning analyses to assess the relative contribution of habitat structure and water physicochemical variables on the richness and species composition. The Habitat Integrity Index (HII), which measures the habitat physical structure, was the best predictor of species richness. The HII and physicochemical variables were jointly the best predictors of species composition. Our results show that Gerromorpha communities respond to gradients of environmental anthropization in the Amazon region, which reinforces the importance of habitat integrity and water quality for the maintenance of Gerromorpha communities.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effects of Environmental Changes on Gerromorpha (Heteroptera: Hemiptera) Communities from Amazonian Streams

et al. 2022

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“…The physical habitat characterization along each section was carried out following the stream assessment methodology of Peck et al (2006) and Hughes and Peck (2008). This methodology has already been successfully applied in several studies of Amazonian streams Mendes et al, 2019;Montag et al, 2019;Oliveira-Júnior et al, 2019;Dias-Silva et al, 2020).…”

Section: Sampling Designmentioning

confidence: 99%

Habitat conditions in streams influence Odonata larval assemblages in the eastern Amazon

Ribeiro¹,

Juen²,

Brasil³

2022

IJO

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The growth of agricultural and mining activities in the Amazon has impacted land-use and caused significant changes in the local environmental conditions of streams. In the face of these changes, our study aimed at assessing how environmental changes affect Odonata larval assemblages in streams in the eastern Amazon. We hypothesized that habitat conditions in streams are strong predictors of Odonata larval assemblages. We sampled 30 headwater streams (1st through 3rd order) in the eastern Amazon. We corroborated our hypothesis that regional- and local-scale environmental changes are important predictors of the Odonata larval assemblage structure. These results indicate that environmental conditions within the stream channel are important to maintain Odonata larval assemblages, as they provide important resources for larval development. For new studies, we recommend the assessment of temporal dynamics to evaluate whether these patterns are stable across time. Finally, evaluating various environmental scales of the original impact is extremely relevant for preventing the deterioration of or recuperating aquatic assemblages in Amazonian streams, considering the ongoing rapid environmental changes and deforestation in the region. Here we demonstrate that in-stream environmental conditions are important to assemblage structure and this must be considered in environmental restoration plans.

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Impacts of oil palm monocultures on freshwater ecosystems in the Amazon: a case study of dragonflies and damselflies (Insecta: Odonata)

da Silva,

de Azevedo,

de Carvalho

et al. 2024

Aquat Sci

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Influence of Local Variables and Landscape Metrics on Gerromorpha (Insecta: Heteroptera) Assemblages in Savanna Streams, Brazil

Cited by 21 publications

References 72 publications

Effects of Environmental Changes on Gerromorpha (Heteroptera: Hemiptera) Communities from Amazonian Streams

Effects of Environmental Changes on Gerromorpha (Heteroptera: Hemiptera) Communities from Amazonian Streams

Habitat conditions in streams influence Odonata larval assemblages in the eastern Amazon

Impacts of oil palm monocultures on freshwater ecosystems in the Amazon: a case study of dragonflies and damselflies (Insecta: Odonata)

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